Hig Pig Word Game
Solve the riddle to find two rhyming words
http://www.vocabulary.co.il/word-play/hig-pig-word-game/

Parts of Speech
They give the word and meaning, you decide if it's a noun, verb or adjective!
http://www.vocabulary.co.il/parts-of-speech/primary/parts-of-speech-science-words/

Synonyms
Here's a bunch of games to help you get really good at knowing synonyms.
http://www.vocabulary.co.il/synonyms/